mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_NXP/TARGET_LPC81X/device/TOOLCHAIN_GCC_ARM/startup_LPC81X.S@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
149:156823d33999 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* File: startup_ARMCM0.S
<> 144:ef7eb2e8f9f7 2 * Purpose: startup file for Cortex-M0 devices. Should use with
<> 144:ef7eb2e8f9f7 3 * GCC for ARM Embedded Processors
<> 144:ef7eb2e8f9f7 4 * Version: V1.2
<> 144:ef7eb2e8f9f7 5 * Date: 15 Nov 2011
<> 144:ef7eb2e8f9f7 6 *
<> 144:ef7eb2e8f9f7 7 * Copyright (c) 2011, ARM Limited
<> 144:ef7eb2e8f9f7 8 * All rights reserved.
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Redistribution and use in source and binary forms, with or without
<> 144:ef7eb2e8f9f7 11 * modification, are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 12 * Redistributions of source code must retain the above copyright
<> 144:ef7eb2e8f9f7 13 notice, this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 14 * Redistributions in binary form must reproduce the above copyright
<> 144:ef7eb2e8f9f7 15 notice, this list of conditions and the following disclaimer in the
<> 144:ef7eb2e8f9f7 16 documentation and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 17 * Neither the name of the ARM Limited nor the
<> 144:ef7eb2e8f9f7 18 names of its contributors may be used to endorse or promote products
<> 144:ef7eb2e8f9f7 19 derived from this software without specific prior written permission.
<> 144:ef7eb2e8f9f7 20 *
<> 144:ef7eb2e8f9f7 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
<> 144:ef7eb2e8f9f7 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
<> 144:ef7eb2e8f9f7 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 24 * DISCLAIMED. IN NO EVENT SHALL ARM LIMITED BE LIABLE FOR ANY
<> 144:ef7eb2e8f9f7 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
<> 144:ef7eb2e8f9f7 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
<> 144:ef7eb2e8f9f7 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
<> 144:ef7eb2e8f9f7 28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
<> 144:ef7eb2e8f9f7 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
<> 144:ef7eb2e8f9f7 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 31 */
<> 144:ef7eb2e8f9f7 32 .syntax unified
<> 144:ef7eb2e8f9f7 33 .arch armv6-m
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 /* Memory Model
<> 144:ef7eb2e8f9f7 36 The HEAP starts at the end of the DATA section and grows upward.
<> 144:ef7eb2e8f9f7 37
<> 144:ef7eb2e8f9f7 38 The STACK starts at the end of the RAM and grows downward.
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 The HEAP and stack STACK are only checked at compile time:
<> 144:ef7eb2e8f9f7 41 (DATA_SIZE + HEAP_SIZE + STACK_SIZE) < RAM_SIZE
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 This is just a check for the bare minimum for the Heap+Stack area before
<> 144:ef7eb2e8f9f7 44 aborting compilation, it is not the run time limit:
<> 144:ef7eb2e8f9f7 45 Heap_Size + Stack_Size = 0x80 + 0x80 = 0x100
<> 144:ef7eb2e8f9f7 46 */
<> 144:ef7eb2e8f9f7 47 .section .stack
<> 144:ef7eb2e8f9f7 48 .align 3
<> 144:ef7eb2e8f9f7 49 #ifdef __STACK_SIZE
<> 144:ef7eb2e8f9f7 50 .equ Stack_Size, __STACK_SIZE
<> 144:ef7eb2e8f9f7 51 #else
<> 144:ef7eb2e8f9f7 52 .equ Stack_Size, 0x80
<> 144:ef7eb2e8f9f7 53 #endif
<> 144:ef7eb2e8f9f7 54 .globl __StackTop
<> 144:ef7eb2e8f9f7 55 .globl __StackLimit
<> 144:ef7eb2e8f9f7 56 __StackLimit:
<> 144:ef7eb2e8f9f7 57 .space Stack_Size
<> 144:ef7eb2e8f9f7 58 .size __StackLimit, . - __StackLimit
<> 144:ef7eb2e8f9f7 59 __StackTop:
<> 144:ef7eb2e8f9f7 60 .size __StackTop, . - __StackTop
<> 144:ef7eb2e8f9f7 61
<> 144:ef7eb2e8f9f7 62 .section .heap
<> 144:ef7eb2e8f9f7 63 .align 3
<> 144:ef7eb2e8f9f7 64 #ifdef __HEAP_SIZE
<> 144:ef7eb2e8f9f7 65 .equ Heap_Size, __HEAP_SIZE
<> 144:ef7eb2e8f9f7 66 #else
<> 144:ef7eb2e8f9f7 67 .equ Heap_Size, 0x80
<> 144:ef7eb2e8f9f7 68 #endif
<> 144:ef7eb2e8f9f7 69 .globl __HeapBase
<> 144:ef7eb2e8f9f7 70 .globl __HeapLimit
<> 144:ef7eb2e8f9f7 71 __HeapBase:
<> 144:ef7eb2e8f9f7 72 .space Heap_Size
<> 144:ef7eb2e8f9f7 73 .size __HeapBase, . - __HeapBase
<> 144:ef7eb2e8f9f7 74 __HeapLimit:
<> 144:ef7eb2e8f9f7 75 .size __HeapLimit, . - __HeapLimit
<> 144:ef7eb2e8f9f7 76
<> 144:ef7eb2e8f9f7 77 .section .isr_vector
<> 144:ef7eb2e8f9f7 78 .align 2
<> 144:ef7eb2e8f9f7 79 .globl __isr_vector
<> 144:ef7eb2e8f9f7 80 __isr_vector:
<> 144:ef7eb2e8f9f7 81 .long __StackTop /* Top of Stack */
<> 144:ef7eb2e8f9f7 82 .long Reset_Handler /* Reset Handler */
<> 144:ef7eb2e8f9f7 83 .long NMI_Handler /* NMI Handler */
<> 144:ef7eb2e8f9f7 84 .long HardFault_Handler /* Hard Fault Handler */
<> 144:ef7eb2e8f9f7 85 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 86 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 87 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 88 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 89 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 90 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 91 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 92 .long SVC_Handler /* SVCall Handler */
<> 144:ef7eb2e8f9f7 93 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 94 .long 0 /* Reserved */
<> 144:ef7eb2e8f9f7 95 .long PendSV_Handler /* PendSV Handler */
<> 144:ef7eb2e8f9f7 96 .long SysTick_Handler /* SysTick Handler */
<> 144:ef7eb2e8f9f7 97
<> 144:ef7eb2e8f9f7 98 /* LPC810 interrupts */
<> 144:ef7eb2e8f9f7 99 .long SPI0_IRQHandler // SPI0 controller
<> 144:ef7eb2e8f9f7 100 .long SPI1_IRQHandler // SPI1 controller
<> 144:ef7eb2e8f9f7 101 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 102 .long UART0_IRQHandler // UART0
<> 144:ef7eb2e8f9f7 103 .long UART1_IRQHandler // UART1
<> 144:ef7eb2e8f9f7 104 .long UART2_IRQHandler // UART2
<> 144:ef7eb2e8f9f7 105 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 106 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 107 .long I2C_IRQHandler // I2C controller
<> 144:ef7eb2e8f9f7 108 .long SCT_IRQHandler // Smart Counter Timer
<> 144:ef7eb2e8f9f7 109 .long MRT_IRQHandler // Multi-Rate Timer
<> 144:ef7eb2e8f9f7 110 .long CMP_IRQHandler // Comparator
<> 144:ef7eb2e8f9f7 111 .long WDT_IRQHandler // PIO1 (0:11)
<> 144:ef7eb2e8f9f7 112 .long BOD_IRQHandler // Brown Out Detect
<> 144:ef7eb2e8f9f7 113 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 114 .long WKT_IRQHandler // Wakeup timer
<> 144:ef7eb2e8f9f7 115 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 116 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 117 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 118 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 119 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 120 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 121 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 122 .long 0 // Reserved
<> 144:ef7eb2e8f9f7 123 .long PININT0_IRQHandler // PIO INT0
<> 144:ef7eb2e8f9f7 124 .long PININT1_IRQHandler // PIO INT1
<> 144:ef7eb2e8f9f7 125 .long PININT2_IRQHandler // PIO INT2
<> 144:ef7eb2e8f9f7 126 .long PININT3_IRQHandler // PIO INT3
<> 144:ef7eb2e8f9f7 127 .long PININT4_IRQHandler // PIO INT4
<> 144:ef7eb2e8f9f7 128 .long PININT5_IRQHandler // PIO INT5
<> 144:ef7eb2e8f9f7 129 .long PININT6_IRQHandler // PIO INT6
<> 144:ef7eb2e8f9f7 130 .long PININT7_IRQHandler // PIO INT7
<> 144:ef7eb2e8f9f7 131
<> 144:ef7eb2e8f9f7 132 .size __isr_vector, . - __isr_vector
<> 144:ef7eb2e8f9f7 133
<> 144:ef7eb2e8f9f7 134 .section .text.Reset_Handler
<> 144:ef7eb2e8f9f7 135 .thumb
<> 144:ef7eb2e8f9f7 136 .thumb_func
<> 144:ef7eb2e8f9f7 137 .align 2
<> 144:ef7eb2e8f9f7 138 .globl Reset_Handler
<> 144:ef7eb2e8f9f7 139 .type Reset_Handler, %function
<> 144:ef7eb2e8f9f7 140 Reset_Handler:
<> 144:ef7eb2e8f9f7 141 /* Loop to copy data from read only memory to RAM. The ranges
<> 144:ef7eb2e8f9f7 142 * of copy from/to are specified by following symbols evaluated in
<> 144:ef7eb2e8f9f7 143 * linker script.
<> 144:ef7eb2e8f9f7 144 * __etext: End of code section, i.e., begin of data sections to copy from.
<> 144:ef7eb2e8f9f7 145 * __data_start__/__data_end__: RAM address range that data should be
<> 144:ef7eb2e8f9f7 146 * copied to. Both must be aligned to 4 bytes boundary. */
<> 144:ef7eb2e8f9f7 147
<> 144:ef7eb2e8f9f7 148 ldr r1, =__etext
<> 144:ef7eb2e8f9f7 149 ldr r2, =__data_start__
<> 144:ef7eb2e8f9f7 150 ldr r3, =__data_end__
<> 144:ef7eb2e8f9f7 151
<> 144:ef7eb2e8f9f7 152 subs r3, r2
<> 144:ef7eb2e8f9f7 153 ble .Lflash_to_ram_loop_end
<> 144:ef7eb2e8f9f7 154
<> 144:ef7eb2e8f9f7 155 movs r4, 0
<> 144:ef7eb2e8f9f7 156 .Lflash_to_ram_loop:
<> 144:ef7eb2e8f9f7 157 ldr r0, [r1,r4]
<> 144:ef7eb2e8f9f7 158 str r0, [r2,r4]
<> 144:ef7eb2e8f9f7 159 adds r4, 4
<> 144:ef7eb2e8f9f7 160 cmp r4, r3
<> 144:ef7eb2e8f9f7 161 blt .Lflash_to_ram_loop
<> 144:ef7eb2e8f9f7 162 .Lflash_to_ram_loop_end:
<> 144:ef7eb2e8f9f7 163
<> 144:ef7eb2e8f9f7 164 ldr r0, =SystemInit
<> 144:ef7eb2e8f9f7 165 blx r0
<> 144:ef7eb2e8f9f7 166 ldr r0, =_start
<> 144:ef7eb2e8f9f7 167 bx r0
<> 144:ef7eb2e8f9f7 168 .pool
<> 144:ef7eb2e8f9f7 169 .size Reset_Handler, . - Reset_Handler
<> 144:ef7eb2e8f9f7 170
<> 144:ef7eb2e8f9f7 171 .text
<> 144:ef7eb2e8f9f7 172 /* Macro to define default handlers. Default handler
<> 144:ef7eb2e8f9f7 173 * will be weak symbol and just dead loops. They can be
<> 144:ef7eb2e8f9f7 174 * overwritten by other handlers */
<> 144:ef7eb2e8f9f7 175 .macro def_default_handler handler_name
<> 144:ef7eb2e8f9f7 176 .align 1
<> 144:ef7eb2e8f9f7 177 .thumb_func
<> 144:ef7eb2e8f9f7 178 .weak \handler_name
<> 144:ef7eb2e8f9f7 179 .type \handler_name, %function
<> 144:ef7eb2e8f9f7 180 \handler_name :
<> 144:ef7eb2e8f9f7 181 b .
<> 144:ef7eb2e8f9f7 182 .size \handler_name, . - \handler_name
<> 144:ef7eb2e8f9f7 183 .endm
<> 144:ef7eb2e8f9f7 184
<> 144:ef7eb2e8f9f7 185 def_default_handler NMI_Handler
<> 144:ef7eb2e8f9f7 186 def_default_handler HardFault_Handler
<> 144:ef7eb2e8f9f7 187 def_default_handler SVC_Handler
<> 144:ef7eb2e8f9f7 188 def_default_handler PendSV_Handler
<> 144:ef7eb2e8f9f7 189 def_default_handler SysTick_Handler
<> 144:ef7eb2e8f9f7 190 def_default_handler Default_Handler
<> 144:ef7eb2e8f9f7 191
<> 144:ef7eb2e8f9f7 192 .macro def_irq_default_handler handler_name
<> 144:ef7eb2e8f9f7 193 .weak \handler_name
<> 144:ef7eb2e8f9f7 194 .set \handler_name, Default_Handler
<> 144:ef7eb2e8f9f7 195 .endm
<> 144:ef7eb2e8f9f7 196
<> 144:ef7eb2e8f9f7 197 def_irq_default_handler SPI0_IRQHandler
<> 144:ef7eb2e8f9f7 198 def_irq_default_handler SPI1_IRQHandler
<> 144:ef7eb2e8f9f7 199 def_irq_default_handler UART0_IRQHandler
<> 144:ef7eb2e8f9f7 200 def_irq_default_handler UART1_IRQHandler
<> 144:ef7eb2e8f9f7 201 def_irq_default_handler UART2_IRQHandler
<> 144:ef7eb2e8f9f7 202 def_irq_default_handler I2C_IRQHandler
<> 144:ef7eb2e8f9f7 203 def_irq_default_handler SCT_IRQHandler
<> 144:ef7eb2e8f9f7 204 def_irq_default_handler MRT_IRQHandler
<> 144:ef7eb2e8f9f7 205 def_irq_default_handler CMP_IRQHandler
<> 144:ef7eb2e8f9f7 206 def_irq_default_handler WDT_IRQHandler
<> 144:ef7eb2e8f9f7 207 def_irq_default_handler BOD_IRQHandler
<> 144:ef7eb2e8f9f7 208 def_irq_default_handler WKT_IRQHandler
<> 144:ef7eb2e8f9f7 209 def_irq_default_handler PININT0_IRQHandler
<> 144:ef7eb2e8f9f7 210 def_irq_default_handler PININT1_IRQHandler
<> 144:ef7eb2e8f9f7 211 def_irq_default_handler PININT2_IRQHandler
<> 144:ef7eb2e8f9f7 212 def_irq_default_handler PININT3_IRQHandler
<> 144:ef7eb2e8f9f7 213 def_irq_default_handler PININT4_IRQHandler
<> 144:ef7eb2e8f9f7 214 def_irq_default_handler PININT5_IRQHandler
<> 144:ef7eb2e8f9f7 215 def_irq_default_handler PININT6_IRQHandler
<> 144:ef7eb2e8f9f7 216 def_irq_default_handler PININT7_IRQHandler
<> 144:ef7eb2e8f9f7 217
<> 144:ef7eb2e8f9f7 218 .end
<> 144:ef7eb2e8f9f7 219